Along a wall there is a collection of excellent gravestons from different ages, I'm pretty certain that the phrase in the Wikipedia "The stones proper up along the walls are one of the last tangible links to the old Frankish burial ground in the Grand Champs des Morts, Pera's 'Great Field of the Dead' which was lost in the wake of urban expansion during the 19th century." ought to have "propped" instead of "proper", and these would be them. There are quite a few more, not all with coats of arms, but I think this gives an impression.